JP2809007B2 - Concrete compaction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete compaction apparatus for compacting concrete cast in a precast concrete (PC) formwork.

[0002]

2. Description of the Related Art Conventionally, the construction of a wall of a building or the like is performed by, for example,
This was performed by constructing a wall form 1 shown in FIG. 3 and casting concrete therein. That is, the wall formwork 1 is constructed such that a plywood formwork 2 such as veneer is erected on one side and then the wall reinforcement 3 is assembled. The plywood formwork 4 is erected. Then, thick pipes 5 and 6 assembled in a cross-girder form are attached to the outside of the plywood forms 2 and 4 via form ties 7 and 8.

[0003] The wall form 1 constructed as described above is used.
Concrete is poured into the concrete, and the poured concrete is vibrated and compacted by vibrators (not shown) via plywood forms 2 and 4. When the concrete has hardened, the thick pipes 5, 6 and plywood are hardened. The walls are constructed by dismantling the molds 2 and 4.

However, such a conventional wall form 1 is constructed such that the plywood forms 2 and 4 and the wall reinforcement 3 and the thick pipes 5 and 6 constituting the form are built at the site, respectively. After the hardened concrete was set, it was necessary to dismantle the thick pipes 5, 6 and the plywood forms 2, 4, and a series of operations were performed on site.

[0005] For this reason, the number of construction workers on site is significantly increased, and in addition to the above-mentioned dismantling after the concrete placed has been cured, the construction period is prolonged and construction costs are increased. There was a problem that would be.

One method for solving such a problem is as follows.
It is conceivable that the molds 2 and 4 are PC molds manufactured in advance at a factory or the like.

[0007]

However, such a P
In the case of C formwork, when vibration is given to the concrete between the formwork via the PC formwork and compacted, the PC formwork is a rigid body, so the transmission efficiency of vibration is poor and jumpers etc. are generated. However, there was a risk that sufficient compaction would not be performed. In addition, since the PC formwork does not come off, the filling of cast-in-place concrete cannot be visually confirmed.

The present invention has been made in view of the above circumstances. It is an object of the present invention to efficiently transmit vibration to cast concrete even when a PC form is used, and to achieve sufficient compaction. It is to provide a concrete compaction device which can be achieved.

[0009]

In order to achieve the above object, the present invention relates to a concrete compaction apparatus for compacting concrete poured into a PC form.
A vibration generating means that is provided outside the C-form and generates vibration; a transmission rod that is attached to the vibration-generating means and that penetrates the PC form; And a vibrating rod separately disposed from the rebar, and the vibration generated by the vibration generating means is transmitted to the vibrating rod.

Preferably, the vibration generating means is automatically activated when concrete placing is electrically detected.

[0011]

In the concrete compaction device according to the present invention, the vibration generated by the vibration generating means is transmitted to the transmission rod attached to the vibration generating means. The transmission rod penetrates the PC form, and the vibration reaches the vibration rod fixed to the tip of the transmission rod through the PC form. Therefore, the vibration is transmitted to the vibrating rod, and is transmitted to the cast concrete via the vibrating rod.

As described above, since the vibration generated by the vibration generating means is efficiently transmitted to the cast concrete without passing through the PC formwork, no jumper or the like is generated, and the cast concrete is sufficiently compacted and strong. You can get a concrete wall.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a concrete compaction device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a case where one embodiment of the present invention is applied to a wall formwork.

A method of constructing the wall form shown in FIG. 1 will be described. First, after the PC inner frame 11 is erected on one side, the reinforcing bar 12 on the inner wall is assembled, and the diaphragm 13 is fixed to the outer surface of the PC inner frame 11 by bolts via the channel 14. A vibrator 15b is attached to the vibration plate 13 via a vibration table 15a. The vibration table 15a and the vibrator 15b constitute a vibration generator 15, and the vibration generator 15 and the diaphragm 13 constitute a vibration generator.

Next, a transmission rod 16 penetrating through the hole 11a of the PC inner frame 11 is fixed to the diaphragm 13 by a nut 17,
An eye nut 18 as vibrating rod fixing means is fixed to the tip of the transmission rod 16, and then the vibrating rod 19 is attached to the eye nut 18.
To the horizontal position by welding. Welding is performed by vibrating rod 1
What is necessary is just to fix it to the eye nut 18 so that there is no backlash, and it is not necessary to bear the tensile force at the welded portion. The eye nut 18, that is, the vibrating bar 19, as shown in FIG.
The PC forms 11 and 21 are provided by the tube 16a as a spacer.
Is arranged in the vicinity of the central portion. The gap between the hole 11a and the transmission rod 16 is filled with a filler 11b for preventing spillage. Further, the pipe 16a is, for example, a vinyl chloride pipe, and is used for cutting off the adhesion of cast concrete.

Next, the rebar 20 of the outer wall is assembled, and PC
The outer frame 21 is erected on the other side. Next, concrete is cast between the PC formwork 11 and 21, and after a predetermined amount of concrete is cast, the concrete is compacted by vibrating the vibrator 15b. In FIG. 1, a diaphragm 1
3, the channel 14, the vibration generator 15, the transmission rod 16, the eye nut 18, the vibration rod 19, etc. constitute a concrete compaction device.

Next, the vibration operation of the concrete compaction device of FIG. 1 will be described. After the cast concrete reaches a predetermined amount, the vibrator 15b is activated. The vibration generated by the vibrator 15b is transmitted to the transmission rod 16 attached to the vibration plate 13 by a nut 17 via the vibration table 15a and the vibration plate 13 fixed to the PC inner frame 11.
At this time, the diaphragm 13 vibrates in the horizontal direction.

The transmission rod 16 is connected to the hole 11 of the PC inner frame 11.
a, and the vibration passes through the hole 11a,
It reaches the eye nut 18 fixed to the tip of the transmission rod 16. The eye nut 18 is disposed near the center between the PC inner mold 11 and the PC outer mold 21.
A vibrating rod 19 is fixed to. Therefore, the vibration is transmitted from the eye nut 18 to the vibrating rod 19, and is transmitted to the cast concrete via the vibrating rod 19.

As described above, the vibration generated by the vibrator 15b is efficiently transmitted to the cast concrete without passing through the PC inner frame 11, so that the cast concrete can be sufficiently compacted and a strong concrete wall can be obtained. it can.

After the poured concrete is sufficiently compacted, the vibration of the vibrator 15b is stopped, and the transmission rod 16 is manually rotated to remove the transmission rod 16 from the eye nut 18. Therefore, the eye nut 18 and the vibrating rod 19 remain in the cast concrete. Further, the diaphragm 13 is also P
It is removed from the C inner form 11 and used for new wall construction. Since the diaphragm 13 and the transmission rod 16 are removed in this manner, there is no problem in the finished appearance of the remaining outer surface of the PC form 11.

FIG. 2 is a sectional view taken along the line II-II of FIG. In FIG. 1 and FIG. 2, the vibrating rod 19 is arranged horizontally, but by arranging it horizontally, compaction of the foot of the wall can be performed more sufficiently. Therefore, depending on the situation, the vibrating rod 19
May be arranged in a vertical direction, an oblique direction, or a cross shape.

In the above embodiment, the case where the diaphragm 13 is attached to the PC inner mold 11 is shown. However, if the order of the construction is reversed from the order described above, the diaphragm 1 is attached to the PC outer mold 21.
3 can be installed for concrete placement.

The vibration table 15a is fixed to the vibration plate 13 in a cantilever state.
For example, by adding a channel and a bolt for fixing the vibration plate 13 to the lower side of the transmission rod 16 in FIG.

Further, although the above embodiment has shown the case of the outer wall, the present invention can be similarly applied to the case of the inner wall, and the same effect can be obtained.

Further, it is determined whether or not the amount of concrete to be poured exceeds a predetermined amount, for example, by projecting the two electrodes 22 and 23 from the inner surface of the PC form 11 to determine whether the concrete has been driven to the level of the electrode 23 or more. Is detected by a change in the electric resistance value, the current value, or the like between the electrodes 22 and 23 (the electric resistance value decreases and the current value increases), the vibrator 15b for compacting the concrete described above is used. Activation can be performed automatically, and automation can save labor. If one of the electrodes 22 and 23 is used as the electrode of the vibrator 15b, only one electrode needs to be installed, and the installation and removal of the electrodes are simplified.

Further, in the above embodiment, the case of the wall form has been described, but the present invention is not limited to this, and can be applied to a column form.

[0028]

As described above, in the concrete compaction device according to the present invention, the vibration generated by the vibration generating means can be efficiently transmitted to the cast concrete without passing through the PC inner frame or the PC outer frame. As a result, no caster or the like is generated, the cast concrete can be sufficiently compacted, and a strong concrete wall can be obtained.

Further, if the vibration generating means is automatically activated when concrete placement is electrically detected, labor saving can be achieved by automation.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a case where an embodiment of a concrete compaction device according to the present invention is applied to a wall formwork.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a configuration diagram showing a conventional concrete compaction method.

[Explanation of symbols]

 Reference Signs List 11 PC inner frame 11a Hole 11b Filler 12 Inner wall reinforcing bar 13 Vibrating plate 14 Channel 15 Vibration generator 15a Vibrating table 15b Vibrator 16 Transmission rod 16a Tube 17 Nut 18 Eye nut 19 Vibrating rod 20 Outer wall reinforcing bar 21 PC outer frame 22 , 23 electrodes

Claims (2)

(57) [Claims] 1. A concrete compaction device for compacting concrete poured into a PC formwork, comprising: a vibration generating means provided outside the PC formwork to generate vibration; and a vibration generating means attached to the vibration generating means. A transmission rod penetrating through the PC form; a transmission rod fixed to a tip of the transmission rod, and a reinforcing bar inside the PC form.
And a vibrating rod separately provided, wherein the vibration generated by the vibration generating means is transmitted to the vibrating rod. 2. The concrete compaction apparatus according to claim 1, wherein said vibration generating means is automatically activated when concrete placing is electrically detected.